EP3615341A1

EP3615341A1 - Device and method for producing a textured coating

Info

Publication number: EP3615341A1
Application number: EP18720226.2A
Authority: EP
Inventors: Dirk Schlatterbeck; Roland Rüedi
Original assignee: Schmid Rhyner AG
Current assignee: Actega Schmid Rhyner AG
Priority date: 2017-04-28
Filing date: 2018-04-25
Publication date: 2020-03-04
Anticipated expiration: 2038-04-25
Also published as: RU2740867C1; US11173723B2; WO2018197531A1; CN110582406A; EP3615341B1; BR112019021210A2; ES2927206T3; CN110582406B; US20200055082A1

Abstract

The invention relates in general to a method and a device for producing a textured coating. The invention particularly relates to a method and a device for the spatially resolved production of a textured coating, preferably for the spatially resolved production of a location-dependent textured coating. The method comprises the steps: - providing a flat representation, - evaluating a data set of the flat representation, - determining local structures of the flat representation, - determining the type and location of at least one texture to be produced on at least one region of the flat representation, - providing a fluid coating material - applying the fluid coating material to at least one region of the flat representation.

Description

Apparatus and method for producing a textured coating

Description Field of the invention

The invention relates generally to a method and apparatus for producing a textured coating. In particular, the invention relates to a method and a

Device for spatially resolved, preferably laterally spatially resolved, producing a textured coating, preferably for spatially resolved generation of a location-dependent, preferably laterally spatially dependent, textured coating.

Background of the Invention In recent years, the importance of a three-dimensional design of coated surfaces has become increasingly important. For example, it is known to produce on a coated surface areas with different haptic and / or visual properties, for example with regard to matt or gloss effects. Coating layers with a three-dimensional configuration are known, for example, from European patent EP 0 741 370 B2. Described here is a lacquer layer, in which

Diffraction structures are introduced, which can serve as a security element, for example, for forgery-proof documents such as ID cards. The structures in the lacquer layer can be obtained by embossing or molding, for example.

Furthermore, European Patent EP 2 178 352 B2 describes a method and a device for the accurate application of structures to a substrate. In this case, in a scanning step, a structure already applied to a substrate is detected and its spatial arrangement is determined, and then a paint is applied by means of an ink jet printing step, the paint being applied to predetermined locations, which are determined depending on the determination of the location of the previously applied structure. Also, various methods are known to produce different haptic (ie tactile sensory) and / or visual properties, ie for example matt gloss effects, with one and the same coating system. Thus, for example, the method known as "chemical embossing" or "drip-off coating" is known, in which a regionally differently pretreated substrate is coated with a UV varnish.

Also, an originally homogeneous paint film can be treated differently by a mask in different areas, for example, by only a local etching or sandblasting takes place.

Also known is the at least partial generation of roughness in a still liquid paint film with the aid of high-energy radiation. For example, the German describes

DE 10 2006 042 063 A1 discloses a process for adjusting the gloss level of surfaces which are obtained by coating with UV- or electron beam-hardenable paints. First, short-wave monochromatic UV radiation acts on one

Coating, so that it comes only in the surface layer to a polymerization and crosslinking. In a further step, electromagnetic radiation with a different, higher wavelength acts on the lacquer layer, so that crosslinking takes place over the entire thickness and the layer hardens. In this way, a microcold is caused in the surface layer, which is fixed by the subsequent curing of the entire layer. In a further development of this method, the European patent application EP 2 418 091 A1 describes a method in which a microfilling occurs only in partial areas of the lacquer surface, while in other areas of the lacquer surface a smooth surface is formed. For this purpose, only in some areas of the paint surface, the application of the necessary for micro-short-wave radiation. However, the beam source is configured, for example by a template or mask, that in other subregions of the surface there is no exposure to the radiation necessary for the microphotography. On In this way surfaces are obtained side by side with micro-folded, for example, rough, and not micro-folded, for example, smooth and / or high-gloss surface.

Thus, there are thus known methods to introduce surface effects only locally in coatings, for example by microfilling of surfaces, which is introduced only locally.

However, difficulties exist in determining the areas in which a particular effect is to be generated, in order subsequently to generate corresponding textures in a location-dependent manner. This is particularly difficult if a planar visual mission includes a particularly large number of different, in particular also very fine, structures, as is often the case in photographic images, for example. In particular, there is therefore a need for a method and a device for producing a textured coating, in particular on a method and a device for spatially resolved, preferably laterally spatially resolved, producing a textured coating, preferably for spatially resolved generation of a location-dependent, preferably a laterally location-dependent, textured coating ,

The object of the invention is to provide a method and a device for producing a textured coating, in particular for spatially resolved, preferably laterally spatially resolved, producing a textured coating, preferably for

spatially resolved generation of a spatially dependent, preferably laterally spatially dependent, textured coating, wherein particularly preferably the spatially resolved generation of a spatially dependent textured coating is digital, i. by means of ink-jet printing.

Summary of the invention

The object of the invention is achieved by the subject matter of the independent claims. Preferred embodiments of the invention can be found in the dependent claims. The method for producing a textured coating, in particular for

spatially resolved, preferably laterally spatially resolved, producing a textured coating, preferably for the spatially resolved generation of a location-dependent, preferably a laterally spatially dependent, textured coating. The present invention comprises the following steps:

a. Providing a two-dimensional representation, in particular in the form of an image, wherein the two-dimensional representation in embodied form, in particular as a photographic image, and / or digitized in the form of a data set is or can be present. By way of example, the areal representation can be present as printed or written text. But it is also possible that the areal representation is a graphic representation, for example a drawing or a painting, or that the areal representation comprises both graphic parts and text parts, for example in the form of a photograph with a caption or as a graphic with a signature. b. Evaluating the data set of the areal representation by means of an informational means, in particular for the spatially resolved determination of hue, brightness, saturation, contrast and / or spatial frequency, in particular the spatial frequency of the hue, the saturation, the brightness and / or the

Contrast.

c. Based on the evaluation of the data set of the area representation

Determine local structures of the planar visual representation.

For example, determining the local structures involves recognizing particular patterns and / or characteristics of representations, such as facial features, a water surface, and the like.

d. Determine the type and location of at least one texture to be generated

at least one area of the area representation, preferably by means of an informational means. If, for example, there is a two-dimensional representation of a face, the evaluation of the data set has recognized the characteristic features of eyes, eyelashes, brows, lips, etc., and their spatial arrangement on the base. Now, for at least one texture to be generated, such as the iris of the eyes, the system determines the type of texture (in this case, a glossy surface) and its location. Also For example, eyebrows can be provided with the texture of the hair to highlight it haptically.

e. Providing a fluid coating material, in particular a paint. f. Applying the fluid coating material to the at least one

Area of coverage, wherein the coating material is applied depending on location, preferably laterally depending on location, such that the thickness of the coating and / or the aftertreatment of the coating and / or the pretreatment of the area to be coated specifically on the nature of the texture of the coating, especially the surface of a lacquer layer is adjusted. For example, if one to be generated

Texture is a high gloss surface that is applied to a representation of an iris, and another structure are, for example, eyebrows, ie a rough surface appearance or texture, this different texture can be created by means of the same coating material by locally adjusting the thickness of the coating. Also, alternatively or additionally, the type of aftertreatment of the coating and / or the type of pretreatment of the area to be coated can be varied. It is even possible in this way to realize even the representation of the hairs of the eyebrows precisely to the original image.

According to one embodiment of the invention, after step d. preferably by means of an informational means at least one texture to be generated changed and / or is changed. This can mean, for example, that subsequently manually or also

automated, for example by a digital assignment of a particular texture by a second, different texture, is replaced. For example, instead of a smooth, glossy texture such as is possible for the snow on the photographic representation of a snow-capped mountain peak, it may be desirable to create a slightly gritty, rather dull texture, or even an ice-flower-like texture. It may also be desirable, in contrast to the visually "glossy" impression, which likewise corresponds to a smooth, glossy coating texture, to give a surface texture reminiscent of crystals, for example the representation of a hot-dip galvanized surface, in the representation of a metallic surface. According to one embodiment of the invention, the at least one texture in the at least one area of the areal representation has a visual and / or haptic impression, which differs from the visual and / or haptic impression in another area of the areal representation. In other words, according to this embodiment of the method, the areal representation has different areas which have different textures. Under the visual impression of a texture is to understand its visual appearance, in particular, whether this texture has a rather dull or a rather shiny appearance. The haptic impression is in turn the tactile sensory impression of a texture, thus describing, for example, its roughness or smoothness.

According to a further embodiment of the invention, the method additionally comprises the step of providing a base, the surface of which is occupied by the flat representation or in whose surface the visual representation is introduced or is to be introduced, wherein the two-dimensional representation is in the form of an image file.

According to a further embodiment of the invention, the method comprises applying the areal representation to the surface of the substrate or into the surface of the substrate. This can be done, for example, if the areal representation does not exist in embodied form, but only as a dataset.

According to yet another embodiment of the invention, the method comprises scanning the areal representation to obtain a digitized data set. This is advantageous, for example, when the two-dimensional representation is initially not digitized in the form of a data record, but merely in embodied form. For example, in this case, it is possible to first scan the areal representation to obtain a digitized data set which is subsequently evaluated, and then fluid

To provide coating material, which is plotted on a partial area of the visual representation based on the evaluation of the data set. In this case, in addition to the color information of the two-dimensional representation, the surface texture and / or the surface relief and / or the height profile of the two-dimensional representation are preferably recorded and included in a the transfer unit transmits transferable texture information. It is therefore possible according to this embodiment of the method, for example, a painting with a strong height relief (for example, an oil image with strong order of the oil paint) to scan, both color and texture and relief information of the area representation, here in the form of a painting by means of recorded and digitized by a scanner. Then, based on this digitized data set, a coating is initially applied by evaluating the color information and an ink application based thereon and then in a further step by evaluating the texture and relief information so that the impression of the original painting is visually and haptically created for the viewer. Thus, not only a texture but also a surface relief of a coating on a flat representation can be produced with the method.

In this case, it is possible for the structure to be applied in accordance with the image information given on the output image, possibly also inline. This in-line generation of image information includes, for example, that the image information is carried out, for example, by scanning a template or an original. However, it is also possible to provide this image information by providing a digital file, for example comprising spatially resolved and / or location-dependent color information of a planar representation and, alternatively or additionally, also information on the surface relief. Furthermore, it is also possible that by scanning a template and in time after scanning by

Evaluation of this template by means of an informative means texture information will be generated only in the form that by the evaluation of the template a suitable

Texture information is selected. This can be done by a suitable evaluation program, but also selected by an operator intervention or - after a preselection by a computerized means, such as stored on a computer

Evaluation program - to be changed by an operator.

For example, the scanning can also be done by a scanner, which also includes the height profile of a template in addition to the pure image information, so that directly a 3D information, for example, the texture of a surface can be detected. In this way, with a digital printing machine, not only an image can be generated, but according to a Embodiment of the invention, the further embodiment, in particular the texture of a surface.

By way of example, a scan can be made by a cruse scanner from Cruse Spezialmaschinen GmbH.

If a plurality of identical planar representations, which are present for example in embodied form, as in the form of signatures, successively spatially resolved with a fluid coating material, so that location-dependent in at least one area of the area representation of a textured coating is obtained, for example, for first of these multiplicity of equal area representations are scanned. The application of the fluid coating material and the texturing of the coating of the subsequent two-dimensional representations are then carried out in a corresponding manner on the subsequent planar representations on the basis of the evaluation of the data set obtained by the scan of the first planar representation.

The scanning is carried out according to an embodiment of the invention with a sensor, in particular a color sensor, in particular comprising a UV laser diode. As a rule, such a color sensor comprises an illumination source, in particular a broadband illumination source, which emits in particular in the region of visible light. Conventional color sensors are able to detect colors and color differences in the visible spectral range, that is to say in the range from 200 nm to 800 nm, and to produce colorimetric figures.

In particular, such a detection is spatially resolved. Usually work usual

Color sensors in a three-color space, so that, for example, color data for a pixel or pixels are obtained in the form of a so-called RGB value. In order to produce the compatibility of such RGB values with other color values, for example L * a * b * values of the CIEL * a * b * system or other color systems, a step of converting the color values determined therefore takes place according to a further embodiment of the invention a color system, preferably a color system of a three-color space, in a different color system.

According to one embodiment of the invention, the setting of a pixel size takes place during the scanning process. This pixel size determines the resolution of the evaluation of the image data and is maintained or possibly even improved for the generation of a locally generated texture. In particular, this pixel size becomes the order of a fluid

Coating material and / or in the location-dependent, preferably laterally location-dependent, generation of a texture of the coating, for example, the paint, maintained or improved. The resolution is between 600 dpi to 1200 dpi. The drops of the preferably applied by ink-jet coating have droplet volumes of a few 10 pl down to 3 pl (picoliter), possibly even smaller. The droplets with 3 pl volume have a diameter of 18 μm The droplet volume correlates with the diameter (in the third power). At a droplet volume of 6 pl 23 μιη diameter are already obtained. However, for the propagation of the droplets on the substrate, the substrate itself still plays a certain role, so that the droplet diameter on the substrate quite well

can vary in size. The distances of the drops produced are the minimum nozzle distances at these resolutions. This corresponds to about 45 μιη at 600 dpi and 23 μιη at 1200 dpi. It can be assumed that, with the further development, drops of 1 .mu.l volume and less can be realized, and consequently even smaller diameters can be achieved in the future, whereby the lower limit here can be taken to be a droplet volume of 0.1 .mu.l.

The special effect of the coating to produce a spatially resolved and

location-dependent texture can also lie in the fact that by the refractive index of the coating, which can be assumed between 1, 47 and 1, 6 for conventional coatings, for example based on acrylate, possibly even a microlens-like effect of

Achieved coating and so the visibility of special structures of the surface representation can be increased according to the method.

Particularly noteworthy are scanners in which in addition to the color information of the image additionally a relief information, where as relief information here the three-dimensional height profile, meaning the course of the contour lines of a coating order of the area representation is detected. This is recorded, for example, as an additional grayscale image. In this way, textures can be detected, which may be present for example in the form of a fabric or a checker plate. In addition, it is possible to scan a painting painted in oil color with such a scanner and the artist's brush stroke, so the Color layer thickness, in addition to color information capture. In the last example, a color print could be produced which, in addition to the color, would again be impressed by means of a colorless coating with a laterally different layer thickness analogous to the grayscale image of the height profile. In this way, for example, digital reproductions of

Art paintings are produced. Other applications would be, for example, the creation of fabric patterns in catalogs where, for example, upholstery covers are close to reality

should be reproduced.

For example, the scanning can also be done by a scanner, which also includes the height profile of a template in addition to the pure image information, so that directly an SD information, for example, the texture of a template can be detected. In this way, with a digital printing machine (i.e., a printing machine using the ink-jet method), one can not only produce an image but, according to an embodiment of the method, also the further design, in particular the texture of a surface.

By way of example, a scan can be made by a cruse scanner from Cruse Spezialmaschinen.

The texture is generated according to embodiments of the method both by a location-dependent, preferably a laterally location-dependent, set thickness of the coating and / or by a location-dependent, preferably laterally location-dependent made

Pretreatment of the surface to be coated and / or by a location-dependent, preferably laterally location-dependent, aftertreatment of the coating or of the coating film produced, for example a paint produced or a paint film produced.

According to a further embodiment of the invention, the fluid coating material comprises a lacquer, preferably a free-radically curable lacquer, more preferably a UV-curable lacquer, wherein the lacquer is designed so that the reactivity at the surface of the applied coating film of the reactivity in the volume of specifically differentiated coating film applied. According to yet another embodiment of the invention, the method comprises a step of curing the applied fluid coating material. The curing is preferably carried out location-dependent. In particular, the duration of the curing and / or the type of curing in different areas of an applied coating and / or between coatings applied in different partial areas of the areal representation are respectively adapted to the type of texture to be produced. In this way, it is possible, depending on location, to generate in different areas a texture adapted in each case to the corresponding structure of the areal representation. If, for example, the two-dimensional representation is in the form of a photograph of a wintry house, it is possible, for example, to produce a coating on the window surfaces of the house and in a partial region of the window

Images of the windows showing frosty flowers produce an ice-flowered effect, whereas non-frosted areas of a window show a glossy appearance. In this case, it is possible, for example, for the fluid coating material to have the same thickness over the entire area of the representation of the windows, but the curing took place differently in different areas. But it is also possible that spatially resolved, a different thickness of the coating film is produced, and then the curing takes place in both areas in the same form, but also different.

According to one embodiment of the method, the irradiation of the coating takes place over the entire area in the same form, wherein in the different areas a different micro-compaction depending on the spatially resolved and / or location-dependent different layer thickness of the coating is obtained. It is also possible that an area has no microfolding. In a particularly preferred embodiment, only the layer thickness is varied and the hardening takes place over the entire area of the areal representation in such a way that the same power is introduced into the coating. For example, curing preferably takes place over the entire area of the areal representation by means of a medium-pressure mercury radiator. In this case, it is possible that only in dependence on a location-dependent, preferably laterally location-dependent, different thickness of the coating, the hardening takes place differently, for example, in a region with a greater layer thickness of, for example 12 μιη and more microcolding occurs while in a Area with one smaller layer thickness of, for example, less than 10 μιη no microfolding is obtained. In other words, a different surface texture can thus be obtained only by the laterally different layer thickness with otherwise the same aftertreatment, in particular with otherwise the same hardening in the coating.

According to this embodiment, the thickness of the applied coating material is spatially resolved, preferably laterally resolved, different and the curing is carried out so that over the entire surface of the planar representation, the same power is introduced into the coating, preferably by means of a medium pressure mercury radiator.

According to one embodiment of the invention, for irradiating the coating, UV-C radiation with a wavelength of 240 nm and more in at least one region to be textured is preferably introduced into the surface layer of the coating. In accordance with a preferred embodiment of the method, the irradiation takes place in two steps in the form that a smaller UV dose is generated in a partial area of the fluid coating material applied to at least one area of the areal representation in a first step, which generates micro-clipping, and in one second step, the layer in the partial area of the fluid coating material is completely through-hardened, UV radiation, such as that of a UV medium-pressure radiator, being used for both curing steps so that a predetermined texture of the surface of the coating is obtained in the irradiated partial area of the coating, which deviates or may differ from the texture or textures of the surface of other subregions of the coating or coatings applied in other subregions of the areal representation. "Longer wave UV radiation" herein refers to, i In particular, excimer radiation has hitherto been used for microfolding which, in comparison with the radiation of a UV medium-pressure radiator mentioned here, has a shorter wavelength.

According to yet another embodiment of the invention are in one

Irradiation step achieved both the micro-setting and the curing. That's it

Coating material is preferably designed such that the absorption of UV radiation varies over the layer thickness of the applied layer of the fluid coating agent. According to yet another embodiment of the invention, the irradiation of both the surface layer as well as the irradiation for curing the coating is carried out in each case by means of a medium-pressure mercury radiator.

In this case, the location-dependent irradiation of the surface layer for the microfolding in at least one subarea by means of a spatially resolved scanning preferably takes place

Coating surface. Particularly preferred is an embodiment of the method in which the scanning is performed by scanning the surface line by line and further the line is divided into individual pixels or pixels and each line in each case an advance of

Scan head is assigned. In this case, the pixel size particularly preferably corresponds to the size of the pixels which was determined during the scanning process of the areal display, or is even improved again relative to this, ie has the scan head for the location-dependent one

Irradiate a larger resolution than the scan head of the color sensor.

According to a further embodiment of the invention, the irradiation is effected by UV radiation under an inert gas atmosphere, preferably under a nitrogen atmosphere.

In this case, according to a further preferred embodiment of the invention

Residual oxygen content less than 5000 ppm, preferably less than 1000 ppm and more preferably less than 500 ppm. According to a further embodiment of the invention, the application of the fluid takes place

Coating material by a printing process, in particular by gravure printing, flexographic printing, screen printing, pad printing or inkjet printing. The coating is particularly preferably made by means of inkjet technology. With this method, it is particularly easy

produce different layer thickness of the coating material in different areas on the surface in one pass. A further aspect of the invention relates to the provision of a device for producing a textured coating, in particular for spatially resolved, preferably laterally spatially resolved, producing a textured coating, preferably for

spatially resolved generation of a location-dependent, preferably laterally spatially dependent, textured coating, comprising: a. Preferably, a device for receiving the pad,

b. means for transporting the pad between the individual work stations, c. preferably a means for scanning a planar representation, in particular in the form of a color sensor, preferably in the form of a color sensor, which comprises a UV laser diode, wherein the means spatially resolved parameters of the area representation detected so that a digitized data set is obtained, and particularly preferably one Means for detecting a height profile of a surface representation, such as a painting of acrylic or oil paints,

d. a computerized means for storing and / or evaluating a digitized one

Dataset of a planar representation, for example in the form of a computer, wherein the data set comprises the color information and preferably the height profile of the areal representation, wherein the height profile can be present in particular as a gray scale image,

e. a device for applying the fluid coating material to the substrate, wherein the device may be configured such that the fluid

Coating material is applied over the entire area of the surface of the substrate or only over a partial area thereof,

f. a device for curing the coating, wherein the curing

depending on location, preferably laterally depending on location, in particular performs in two steps and preferably by means of the device for curing location dependent, preferably laterally dependent, introduced into the coating power is preferably adjustable so that in a first step depending on location, preferably laterally depending on location, only the surface layer of Coating is treated, wherein the surface layer preferably has a thickness between 10 nm and 1 μιη, and in a second step, the coating is location-dependent, preferably laterally location-dependent, curable over the entire thickness, G. preferably a device for removing the pad, and h. preferably a system control, for example in the form of an informational means such as a computer, for controlling the operations of the device, which controls the parameters over all process steps and ensures their interaction.

The device for curing according to feature f. However, it can also be designed so that curing takes place in one step. In this case, depending on the location, the curing can be different depending on the location, if the coating has a different layer thickness, depending on location and / or in a spatially resolved manner. It is also possible that the curing device comprises two UV emitters, which are UV rays

Send out different wavelengths, so that in this way the curing takes place in two stages, where necessary, only one or the other radiator is used.

The plant controller also preferably includes means to read out parameters in an informational format commonly used in the printing industry, for example JDF (Job Definition Format), and to translate them into process steps. By way of example, such a means may comprise a parameterization file stored in a memory.

According to a further embodiment of the invention, the device comprises at least one sensor as well as an encoder and actuators in order to detect the respective method steps by sensors and to implement them in a controlled manner by the computer by means of corresponding actuators.

According to yet another embodiment, the device comprises a device for digital finishing with stamping foils. Here, an adhesive is ortausgelöst digitally, preferably laterally spatially resolved and possibly also applied with different layer thicknesses on the substrate or a stamping foil and then partially transferring the stamping foil. For example, the embossing foil is a PET carrier foil with a multilayer coating in which a layer comprises an aluminum vaporization, which by a colored layer after the transfer also may be gold or may include other metallic effects. Here also other effects can be transferred like holograms or other interference structures).

The device can also be designed as a compact device, which can be used, for example, for home applications or in a copy shop.

The invention will be described in more detail below with reference to preferred embodiments, which are also referred to as examples and with reference to the accompanying drawings.

Show it:

FIG. 1 shows a schematic illustration of an embodiment of a device 1 for producing a textured coating on a substrate,

2 shows a further schematic representation of a device 1 according to another

preferred embodiment,

3 is a schematic representation of a planar representation with spatially resolved, preferably laterally spatially resolved, different textures.

DESCRIPTION OF PREFERRED EMBODIMENTS

Within the scope of the present inventions the following definitions apply:

paint

In the context of the present application, a varnish is understood as meaning a fluid, for example liquid or pasty, coating material by means of which a layer is applied to a substrate. The layer thus obtained, which is referred to as a lacquer layer, but also as a coating, is generally used to protect the surface, for example, to improve the scratch resistance, as well as for finishing, for example by generating a certain surface impression, such as a high gloss surface. texture

The texture generally describes the nature of a surface, in particular with regard to its optical and / or aesthetic properties, although the coloration is disregarded. Of particular interest are the properties of a surface which determine its gloss, that is the measure of reflecting or scattering incident light on the surface, as well as those properties which affect the feel, ie properties in contact with the surface. Here, in particular, the relief of the surface (also referred to as surface relief), ie the course of the contour lines, and the roughness of the

Surface of importance. In the context of the present invention, the relief of

Surface of a surface representation also referred to as the height profile.

image

In the context of the present application, an image is understood to mean a two-dimensional representation, for example in the form of a photograph or a drawing, but also in the form of text. Furthermore, the image can also be designed as a painting, in particular as a designed with oil and / or acrylic paint paintings. Such paintings are characterized in particular by a strong application of paint, which varies locally, which is due to the brushstrokes when painting, so have a pronounced surface relief. structure

In the context of the present application, a structure is understood to be the visual nature of a region of a surface representation, which is distinguished, in particular, from the visual nature of other, adjacent regions. For example, a structure may exist as a pattern, that is, as a visual design of a surface having some symmetry and / or periodicity. But it is also possible that the visual representation forming the structure is random in the sense that it is only one particular one

Having close order, such as the visual representation of a tree bark, or in the form of a non-periodic, but ordered arrangement. In the context of the present invention, a structure is also understood as meaning those areas which, according to the

Experience of life as distinct from other areas. For example, in the visual representation of a face different structures, for example, in terms of the eyes the area of the iris than usually round or rounded area as well as the eyelashes are distinguished as dark, oblong-curved, thin areas.

Spatially resolved order

Under the spatially resolved application of a substance, for example a coating material, to a surface, it is generally understood that the application takes place on predetermined areas of a substrate to be coated, for example paper or cardboard.

For example, the spatially resolved application of an ink includes generating an image and / or a printed text.

Location-dependent order

If a location-dependent order is referred to below, this is the application and / or after-treatment of a location, which is usually spatially resolved

Coating material, such as a paint, in the form that the application depending on the position at which the application of the coating material is carried out site-specifically different. For example, location-dependent application or location-dependent application involves applying a coating material in a particular area of a substrate to be coated of a certain thickness, which may differ from the thickness with which the coating material is applied in another area of the substrate.

In general, however, it is also possible that, depending on location, the same coating material with the same thickness is applied in different areas, but a location-dependent different treatment of these areas takes place.

Of course, it is also possible that the location-dependent order, the type of material to be applied and / or the thickness of the applied layer and / or the

After treatment of the applied layer can be made different. It is thus possible according to an embodiment, the application of different

Layer thicknesses with different post-treatments to combine. The microfilling or self-matting of a coating is layer thickness-dependent and can, as stated, depending on Layer thickness to matt and lead to shiny areas. These also differ haptically extremely from each other. Thus, the glossy areas are rather "sticky", so that when sweeping with the finger, the finger is slowed down, whereas in the micro-folded areas of the fingers very velvety-light slides over it and the film feels "soft".

If, in the context of the present invention, a spatially dependent and / or spatially resolved application is used, it is to be understood that the application of the coating, in particular with regard to the lateral, ie. which differs depending on the width of the applied coating and / or color location-dependent and / or spatially resolved.

printing inks

Inks or inks are generally referred to as those fluid coating materials whose function is essentially the visual design of documents to be coated or coated, for example in the production of images or text. Printing inks are thus formed in particular as coloring substances, for example by the addition of pigments and / or dyes in the fluid coating material. The terms "ink" and "ink" are usually used synonymously. Three-dimensional design of surfaces

A three-dimensional configuration of a surface is understood when a coating material for producing a coating is not only two-dimensionally delimited in the form that, for example, an image and / or text is obtained, but the order of the coating material, for example a paint in the Form takes place, that the height of the order of the coating material, so for example a lacquer layer, and / or the height profile in this coating, so for example their relief, is designed, for example by a targeted spatially resolved, preferably laterally spatially resolved, setting a certain thickness of the material and / or a selected also spatially resolved, preferably laterally spatially resolved, form of the aftertreatment of the

Coating material and / or a selected preferably laterally different composition of the coating material. coating

Under a coating is in the context of the present invention, the process of

Coating understood, so creating a surface layer on a substrate. By means of a coating, therefore, a layer of a material is deposited on a surface, as a rule a connection is formed between the coating material and the substrate, so that a bond exists between the resulting layer and the substrate. This is possible, for example, by forming an interface layer between the layer and the substrate, for example by applying a primer or adhesion promoter to the parts of the substrate to be coated or coated before application of the coating material. It is also possible for a fluid coating material to be migrated, at least in parts, into regions of the base to be coated, and in this way an adhesive bond is produced. The location of coating material on a surface has a certain height, which may be in the range of a few micrometers, for example, in the case of coatings.

In contrast to such a coating are methods in which the applied material is absorbed by the substrate, so that no or only a very small local increase is obtained. This is the case, for example, when an ink is applied to a absorbent pad. In this case, the ink is absorbed by the material, for example paper, so that in this case less an application is made to the surface of a substrate rather than an entry of material into the surface of the substrate.

In particular, the term coating also includes the term varnish, where a varnish is a layer which, by applying a varnish, is a fluid

Coating material is produced on a surface of a substrate.

colour

Under the color of a two-dimensional representation of their color or color is understood. The color impression or color location can be specified in different ways, in particular in different so-called color spaces or color systems. As a rule, color sensors, for example, work in a three-color space. micro fold

In the context of the present invention, the term "microfolding" is understood to mean the following phenomenon: the surface layer of an applied fluid

Coating material is hardened in a first step to a skin-like layer, this means a layer with a near-surface harder or tougher portion. Due to the shrinkage in the cure of certain materials, e.g. unsaturated acrylates, such as those contained in, for example, radically UV-curable formulations, this surface layer contracts during curing. This leads to a structuring, which requires that at least in a partial region of the coating surface there is a local change in the coating thickness, so that the thickness fluctuations are at least in the single-digit micrometre range. In particular, the surface layer may be present folded. In a second step, the applied fluid coating material is cured over the entire volume. Examples

The method according to embodiments of the present invention can be carried out particularly well, for example, by means of fluid coating materials which are accessible by high-energy particle radiation, in particular by UV radiation, curable, in particular by free-radical polymerization, and a micro-folding process. In this case, the microfolding takes place by irradiation of the surface layer of an applied coating, for example by irradiation with UV-C radiation having a wavelength of more than 240 nm.

In general, a fluid coating material (or coating fluid) suitable for carrying out the process according to embodiments of the invention may have a composition in which 100 parts of a liquid binder is added to 13 parts of a mixture of photoinitiators and / or crosslinking agents and / or activators the curing come. In the context of the present invention, photoinitiators are substances which are excited by absorbing light, in particular UV light, and subsequently form a reactive species, in particular radicals or cations. The formation of the reactive species occurs either through the disintegration of the molecule and / or through interaction with a synergist.

According to one embodiment of the invention, photoinitiators are used which form radicals.

Crosslinking agents and / or activators are understood in the context of the present invention to be substances which make polymerization reactions particularly efficient.

for example, by being able to form particularly effective starting radicals. Another example of an increase in efficiency is the transfer of an oxygen-inactive radical into a re-start radical. In the context of this disclosure, the activator is also a synergist in each case and can also be referred to as such.

According to one embodiment of the invention, at least one tertiary amine is used as crosslinking agent or activator. This is preferably done according to another

Embodiment of the invention, when a so-called type II photoinitiator is used as the photoinitiator. In a type II photoinitiator radicals are formed by the excited photoinitiator, for example benzophenone in the triplet state, a

withdrawing a hydrogen atom from a neighboring molecule. In contrast, in type I photoinitiators, the radicals are formed directly by the decomposition of the initiator molecule. An example of a type I photoinitiator is available under the trade names Irgacure 1173 and Darocur 1173, respectively, and includes 1-phenyl-2-hydroxy-2-methyl-1-propanone.

Preferably, an acrylate-based binder is used.

Further preferably, the mixture of photoinitiators and / or crosslinking agents and / or activators is composed so that one part of a type 1 photoinitiator, 6 parts of a type II photoinitiator and 6 parts of an activator are added. The synergist (or activator) causes in each case together with type I I photoinitiators, an overcoming of the oxygen inhibition and is particularly in the networking under atmospheric conditions used to enable and / or enhance surface reactivity.

According to one embodiment of the invention, the liquid coating material has the following composition:

40 parts HDDA (hexanediol diacrylate)

10 parts of TMPTA (trimethylolpropane triacrylate)

50 parts DPGDA (dipropylene glycol diacrylate)

1 part Irgacure 1173 (or Darocur 1173)

6 parts benzophenone

6 parts of N-methyldiethanolamine

The fact that the reactivity at the surface of the applied coating film specifically differs from the reactivity in the volume of the applied coating film is thus achieved by dissolving 1 part of a type I photoinitiator, here 1-phenyl-2-hydroxy-2-methyl-1. Propanone, 6 parts of a photoinitiator type II, here benzophenone, and 6 parts of an activator, here N-methyldiethanolamine, are used per 100 parts of a liquid binder mixture (here comprising HDDA, TMPTA and DPGDA). By varying the proportions of the Type I photoinitiator relative to the proportions of the Type II photoinitiator, further targeted discrimination of the reactivity at the surface of the coated coating film can be achieved from the reactivity in the volume of coating film applied. The term parts in the context of this disclosure in each case by weight.

According to a further embodiment of the invention, the liquid coating material has the following composition: 80 parts of HDDA (hexanediol diacrylate)

20 parts of TMPTA (trimethylolpropane triacrylate)

1 part Irgacure 1173 (or Darocur 1173) 6 parts benzophenone

6 parts of N-methyldiethanolamine

The fact that the reactivity at the surface of the applied coating film specifically differs from the reactivity in the volume of the applied coating film is thus achieved by dissolving 1 part of a type I photoinitiator, here 1-phenyl-2-hydroxy-2-methyl-1. Propanone, 6 parts of a photoinitiator type II, here benzophenone, and 6 parts of an activator, here N-methyldiethanolamine, per 100 parts of a liquid binder mixture (here HDDA and TMPTA) are used and in contrast to the previous example, a more reactive binder mixture is used , By changing the proportions of the

Type I photoinitiators relative to the proportions of the type II photoinitiator may further target the reactivity at the surface of the coated photoinitiator

Coating film can be achieved by the reactivity in the volume of the applied coating film.

Another example of a product that can be microfilled by means of the radiation of a medium pressure mercury radiator is described below

Formulation coated: 100 parts DPGDA (dipropylene glycol diacrylate)

1 part Irgacure 1173 (or Darocur 1173)

6 parts benzophenone

6 parts N-methyldiethanolamine That the reactivity at the surface of the applied coating film of the

Reactivity specifically differentiated in the volume of the applied coating film is thus achieved in that 1 part of a photoinitiator of type I, here 1-phenyl-2-hydroxy-2-methyl-1-propanone, 6 parts of a photoinitiator type II, here benzophenone and 6 parts of an activator, here N-methyldiethanolamine, per 100 parts of a liquid binder (here comprising DPGDA). The DPGDA used as difunctional binder forms a relatively soft film. The volume shrinkage is compared with TMPTA-containing

Formulations less pronounced. By changing the proportions of the photoinitiator of the type I relative to the proportions of the type II photoinitiator, further targeted discrimination of the reactivity at the surface of the applied coating film can be achieved from the reactivity in the volume of coating film applied. In a further embodiment, the microfolding succeeds in only one curing step. For this purpose, the coating formulation, for example, elastic aliphatic

Urethane acrylates are added. A very good reactivity at the same time very much

pronounced effect is achieved with the following formulation: 80 parts DPGDA (dipropylene glycol diacrylate)

20 parts of Ebecryl 4491 from Allnex

1 part Irgacure 1173 (or Darocur 1173)

6 parts benzophenone

6 parts of N-methyldiethanolamine

The fact that the reactivity at the surface of the applied coating film specifically differs from the reactivity in the volume of the applied coating film is thus achieved by dissolving 1 part of a type I photoinitiator, here 1-phenyl-2-hydroxy-2-methyl-1. Propanone, 6 parts of a photoinitiator type II, here benzophenone, and 6 parts of an activator, here N-methyldiethanolamine, are used per 100 parts of a liquid binder mixture (here comprising DPGDA and Ebecryl 4491). By altering the proportions of the Type I photoinitiator relative to the proportions of the Type II photoinitiator, further targeted discrimination of reactivity at the surface of the coated one may be made

Even with AC Resin 250 from BASF similar effects can be achieved.

All of the formulations mentioned are basic formulations which, in order to achieve processability, can be supplemented with corresponding flow and wetting additives. However, this additive has no influence on the achievement of the desired effects. In addition, in these examples for achieving the microfolding, a Layer thickness of at least 12 μιη necessary. In a range between 10 and 12 m, the microfolding is formed only irregularly. Below 10 μιη the surface each remains shiny. By deliberately influencing the formulation and the curing conditions (wavelength, dose, intensity), the layer thickness range in which a microfolding is achieved can be adjusted within wide limits. By correspondingly high UV doses of a suitable wavelength (UV-C), the microfolding can even be completely prevented.

The above formulations are all characterized by a very low

Processing viscosity (from 70 - 120 s in the DIN 2 flow cup), which allows their use in inkjet printheads. In this case, advantageously, a method can be used which allows the simultaneous generation of areas of greatly varying layer thicknesses.

However, the effect of microfiltration is in no way dependent on the viscosity. It is also possible to produce much higher viscosity formulations that can be applied by other methods. It is important to obtain a relatively higher reactivity at the surface than in the volume. The photoinitiators used must be hers

Have absorption maximum in the UV-C range.

The effect of microfolding can be prevented by increasing the formulation

Concentrations of volume-hardening photoinitiators (e.g.> 2% Irgacure 1173 with otherwise equal concentrations of photoinitiators and coinitiators in the formulation may prevent the effect). The same applies if, for volume hardening, photoinitiators with a higher absorption wavelength are used in suitable concentrations. Thus, by adding 1% TPO (triphenylphosphine oxide) in the above-mentioned formulations, the micro-folding can be prevented. The percentages in each case relate to percent by weight.

Description of the drawings

Figure 1 shows a schematic representation of an embodiment of a device 1 for producing a textured coating on a substrate 3, in particular for

spatially resolved, preferably laterally spatially resolved, producing a textured

Coating, preferably for spatially resolved generating a location-dependent, preferably laterally location-dependent, textured feed, wherein the coating is obtained by the application of a fluid coating material, preferably one which passes through

energy-rich particle radiation, in particular by UV radiation, is curable, wherein the device comprises:

It is in Figure 1, a means for transporting the pad 3 between the individual

Recognize workstations. This means of transport is exemplified in the apparatus 1 by the parts 21, 22 and 23 and comprises a first roller or roller 21 on which a substrate 3, for example formed from paper, cardboard, laminated paper or laminated cardboard , Plastic films and Wellpappesubstraten, or polyolefin film or PET or acetate film, is rolled up.

The base 3 is moved in the direction of the arrow 25, the transport direction, through the device 1, wherein the surface 31 of the printing substrate or the substrate or the base 3, which is to be printed, is directed upward in Figure 1. The roller 22 is another part of the means of transport.

Furthermore, the device 1 comprises a device 4 for applying the fluid

Coating material on the substrate 3. A device for applying a fluid coating material is described for example in WO 2009/012996, whose disclosure content by incorporation is also the subject of the present disclosure, as a coating unit, according to the present invention, the device described therein for smoothing the Although it is advantageous to use film applied to the substrate surface by means of the coating unit, it represents an optional unit which does not necessarily have to be used for carrying out the invention.

The device 4 can be designed such that the fluid coating material is applied over the entire area of the surface 31 of the base 3 or only over a partial area thereof. A job over the entire area of the surface 31 of the substrate 3 is advantageous when a fluid coating material is applied, which also performs a protective function in the cured state, for example having scratch-resistant properties. In contrast, a merely partial order, ie one Application of the fluid coating material only over a portion of the surface 31 of the pad 3, of advantage, for example, specifically highlight or mark certain area of the pad. In this way it is also possible to generate images, for example in the form of images or texts.

The device 1 further comprises a device 7 for curing the coating. The curing of the coating takes place depending on location, preferably laterally depending on location, in particular in two steps. The power which is preferably dependent on location, in particular laterally depending on the device 7, for curing in the coating is preferably adjustable so that in a first step only the surface layer of the coating is treated. In this case, the surface layer preferably has a thickness of between 10 nm and 1 μm. In a second step, the coating is curable over the entire thickness. Preferably, the apparatus 7 comprises a computerized means for controlling the curing of the coating. In particular, the informatic means is designed to determine the performance, dose and / or location of the cure.

In general, without being limited to the example described above, it is possible that the curing takes place in the form that the same power is applied over the entire area of the area representation, for example, by uniformly and without local variation of performance and / or Wavelength UV radiation, for example by means of a UV medium-pressure lamp, is cured. In this case, it is furthermore possible for different textures of the coating to be formed as a function of the different thickness of the coating depending on location, preferably laterally depending on location, for example by creating microstructures in regions with a higher layer thickness, but in areas with a lower layer thickness. not micro-folded surface is generated.

Furthermore, FIG. 1 shows a device 6 for drying the coating. By means of this device, it is possible in a first step to remove volatile constituents of the fluid coating material before curing. However, such a device 6 is only optionally included in the device 1. Furthermore, the device 1 may comprise a device 8 for cooling the coated base after curing. FIG. 1 also shows a device 9 for scanning a flat representation. By way of example, the apparatus 9 for scanning a planar representation comprises a sensor, by means of which, preferably spatially resolved, in particular laterally spatially resolved, the color location of pixels of the areal representation is detected. For example, the device 9 comprises a color sensor, for example a sensor comprising a UV laser diode. According to a further embodiment, the device 9 further comprises a means for detecting a height profile of a flat representation. This means that, according to this embodiment, both coloration and texture and relief information of the areal representation, for example in the form of a painting, can be recorded and digitized by means of the device 9, thus for example by means of a scanner, for example a 3D scanner. Then, based on the digitized data set thus obtained, which includes both the color information and, for example, in the form of a grayscale image, the relief information of the area representation, first by evaluating the color information and a color order based thereon and then in a further step by evaluating the texture and Relief information a coating be applied so that the viewer visually and haptically, for example, again creates the impression of the original painting. In this way, not only a texture, but also a surface relief of a coating on a flat representation can be produced with the device 1. The device 1 further comprises a computer-aided means for storing and / or evaluating a digitized data set of a flat representation, for example in the form of a computer. However, it is also possible that this informational means is integrated in the device 9. The device 1 may further comprise, according to a preferred embodiment of the invention, a plant controller 5, for example in the form of an informational means such as a computer, for controlling the operations of the plant, which preferably sensory collects the relevant parameters in all process steps and preferably with respective associated actuators controls and thus ensures their interaction. Furthermore, it is also possible for the computer-aided data set for storing and / or evaluating a digitized data set to be included in the system control 5, ie for example, as shown here by way of example, the device 9 by means of an interface 59 is connected to the device 5 as a computerized means for storing and / or evaluating a digitized data set of a flat representation.

The system controller 5 preferably also comprises a means for setting parameters in one

computer format, which is commonly used in the printing industry, for example, to read JDF (Job Definition Format) and implement it in process steps. By way of example, such a means may comprise a parameterization file stored in a memory. It is also possible that the device 1 generally, without being limited to the embodiment shown here, comprises a plurality of system controls, which selectively control individual devices.

According to a further embodiment of the invention, the device 1 comprises at least one sensor as well as an encoder and actuators in order to detect the respective method steps by sensors and to implement them in a controlled manner by the computer by means of corresponding actuators.

The system controller 5 is preferably suitable according to one embodiment

Interfaces, by way of example the interfaces 54, 56, 57, 58, 59 with devices comprised by the device 1, are connected by way of example to the devices 4, 6, 7, 8. 9.

FIG. 2 shows a further schematic representation of a device 1 according to a further preferred embodiment. The device 1 in this case comprises a device for receiving the pad 301, in which various documents 3, which are not all designated for better clarity, are included. From the device 301 for receiving the pad 3 are individual documents 3, which may comprise, for example, paper, cardboard, laminated paper or laminated cardboard, plastic films and corrugated cardboard substrates, or polyolefin or PET or acetate, by means of the means for transporting the pad 3 between the individual workstations moved through the device 1.

The means for transporting the base 3 comprises a first roller 21, a second roller 23 as well as additionally a further roller 22, whereby still different further rollers 22 can be covered by the means for transport. Furthermore, the means for transporting a conveyor belt 24, which connects the two rollers 21 and 23 together, by the rotation of at least one of the rollers 21, 23, a movement of the documents 3 through the

Device 1 in the direction of arrow 25 takes place.

Again, the device 1 comprises the device 4 for applying the fluid

Coating material on the pad 3 and a device for curing the

Coating 7.

Furthermore, the devices 6 and 8 are shown, which is the drying of the fluid

Coating material or a cooling of the printed substrate can serve after curing and in the present case are only optional. The devices 4, 6, 7, 8, 9 can each be connected via an interface 54, 56, 57, 58, 59 to a system controller 5. Such a system controller 5 with the corresponding interfaces is also only optionally included in the device 1.

FIG. 2 also shows a device 9 for scanning a two-dimensional representation. For example, the device 9 for scanning a planar representation comprises a sensor, by means of which, preferably spatially resolved, the color locus of pixels of the areal image

Presentation is recorded. For example, the device 9 comprises a color sensor, for example a sensor comprising a UV laser diode. According to another

Embodiment 9 preferably comprises a means for detecting a

Height profile of a flat representation. Furthermore, the device comprises a computer-aided means for storing and / or evaluating a digitized data set of a planar

Presentation. For example, this informational resource may be in the form of a computer. It is possible that this computer is separate. However, it is also possible for the information-based means to be part of or included in a system control 5. Furthermore, it is generally, without limitation to the embodiment shown here, also possible that several system controls 5 are included in a device 1, which each control individual devices 4, 6, 7, 8 and 9. In addition, the device 1 of this embodiment comprises a device 302 for removing the base 3. Figure 3 shows a schematic representation of a surface. The areal representation is on one

Pad 3 (not shown) applied and comprises a plurality of regions 32, 33, 34, 35, 36 which have different structures. For example, the region 32 is formed as a cloud. The nature of the structure is generally considered to be rather matte, so that in this area 32 a rather matte texture of a coating is to be created. The region 33 is schematically formed in the shape of a moon and consequently obtains a smooth surface texture in order to produce a high-gloss surface, which supports the visual impression of the moon as a luminous celestial phenomenon. Furthermore, the area 34 is formed as a tree trunk, the area 35 as a treetop. Both areas have characteristic structures, for example the treetop 35 in the form of foliage, the tree trunk 34 a rough surface in the form of bark. The corresponding textures can be produced according to the method, so that the visual impression of the areal representation can be emphasized even more clearly by occupancy by means of a spatially resolved, laterally spatially resolved, applied and location-dependent, laterally spatially dependent, textured coating, in particular a coating. The region 36 of the area representation is designed as a representation of a frame made of wood, so that the texture of a rough, grained wood surface is produced on this area 36.

Of course, not only aesthetic effects are possible in this way. Rather, haptic impressions can be specifically produced in this way.

Claims

claims

1. A method for producing a textured coating, in particular for

spatially resolved, preferably laterally spatially resolved, producing a textured coating, preferably for spatially resolved generation of a spatially dependent, preferably laterally spatially dependent, textured coating, comprising the following steps:

a. Providing a planar representation, in particular in the form of an image, wherein the planar representation is present in embodied form, in particular as a photographic image, and / or digitized in the form of a data record,

b. Evaluating the data set of the areal representation by means of an informational means, in particular for the spatially resolved determination of hue, brightness, saturation, contrast and / or spatial frequency, in particular the spatial frequency of the hue, the saturation, the brightness and / or the

contrast,

c. so that based on this, local structures of the planar visual representation are determined,

d. Determine the type and location of at least one texture to be generated

at least one area of the area representation, preferably by means of an informational means,

e. Providing a fluid coating material, in particular a lacquer, f. Applying the fluid coating material to the at least one

Area of coverage, wherein the coating material is applied depending on location, preferably laterally depending, such that the thickness of the coating and / or the aftertreatment of the coating and / or the pretreatment of the area to be coated specifically on the nature of the texture of the coating, especially the surface of a lacquer layer is adjusted. The method of claim 1, wherein after step d. which is preferably modifiable and / or changed by means of an informative means at least one texture to be generated.

Method according to one of claims 1 or 2, wherein the at least one texture in the at least one region of the areal representation has a visual and / or haptic impression, which differs from the visual and / or haptic impression in another area of the areal representation.

Method according to one of claims 1 to 3, wherein the two-dimensional representation is in the form of an image file, comprising the step of providing a base, applied to the surface of the surface representation or apply or in the surface of the planar representation is introduced or to bring.

A method according to claim 4, comprising the step of applying the areal representation to or introducing the areal visual representation into the surface of the substrate.

The method of claim 1, wherein the areal representation is in embodied form, comprising the step of scanning the areal representation to obtain a digitized dataset, wherein preferably in addition to the color information of the areal representation the surface texture and / or height profile of the areal representation is detected and is translated into a texture information transferable with the coating unit.

The method of claim 6, wherein a plurality of equal area representations is sequentially spatially occupied with a fluid coating material, and wherein the first of the area representation is scanned and based on the evaluation of the data set, which is obtained by the scan of the first area representation, the order the fluid coating material is carried out on the texturing of the coating of the subsequent planar representations.

8. The method according to any one of claims 6 or 7, wherein the scanning by means of a sensor, preferably a color sensor, in particular comprising a UV laser diode, takes place. 9. The method of claim 8, comprising a step of converting the color values from a color system, preferably a color system from a three-color space, into another color system.

10. The method according to any one of claims 8 or 9, wherein during the scanning operation, the setting of a pixel size, wherein this pixel size for the order of the fluid

Coating material and / or in the location-dependent generation of a texture of the coating, maintained or improved.

11. The method according to any one of claims 1 to 10 wherein the fluid coating material comprises a lacquer, preferably a free-radically curable lacquer, particularly preferably a UV-curable lacquer, wherein the lacquer is designed so that the reactivity at the surface of the applied coating film of the reactivity in the volume of the applied coating film specifically different. 12. The method according to any one of claims 1 to 11, comprising a step of curing the applied fluid coating material, wherein the curing is preferably location-dependent, in particular the duration of curing and / or the type of curing in different areas of an applied coating and / or between Coatings applied in different partial areas of the areal representation are in each case adapted to the type of texture to be produced.

13. The method of claim 12, wherein the thickness of the applied

Coating material spatially resolved, preferably spatially resolved laterally, is different and the curing is carried out so that over the entire surface of the planar representation of the same power is introduced into the coating, preferably by means of a

Medium pressure mercury emitter.

14. The method of claim 12 or 13, wherein for irradiating the coating UV-C radiation having a wavelength of 240 nm and more in at least one texturizing area is introduced into the surface layer of the coating.

15. The method according to any one of claims 12 to 14, wherein the irradiation is location-dependent two-step in the form that in a portion of the applied to at least a portion of the areal representation fluid coating material in a first step, a smaller UV dose is irradiated, the microfolding and, in a second step, the layer in the partial area of the fluid coating material is completely through-hardened, with longer-wave UV radiation, such as that of a UV medium-pressure radiator, being used for both curing steps, so that a predetermined texture of the surface is present in the irradiated partial area of the coating the coating is obtained, which may deviate or deviate from the texture or textures of the surface of other portions of the coating or applied in other areas of the surface representation of coatings.

16. The method according to any one of claims 12 to 15, wherein both the microplating and the curing are achieved in an irradiation step, and wherein the coating material is further preferably designed so that the absorption of UV radiation over the layer thickness of the applied layer of the fluid

Coating agent varies.

17. The method according to any one of claims 12 to 16, wherein the irradiation of both the

Surface layer as well as the irradiation to cure the coating in each case by means of a medium-pressure mercury radiator.

18. The method according to any one of claims 12 to 17, wherein the location-dependent irradiation of the surface layer for microfilling takes place in at least a partial area by means of a spatially resolved scanning of the coating surface.

19. The method of claim 18, wherein the scanning is performed by scanning the surface line by line and further, the line is divided into individual pixels or pixels and each line is associated with an advance of the scan head.

20. The method according to any one of claims 12 to 19, wherein the irradiation is effected by UV radiation under inert gas, preferably nitrogen atmosphere.

21. The method of claim 20, wherein the residual oxygen content is less than 5000 ppm, preferably less than 1000 ppm and more preferably less than 500 ppm.

22. The method according to any one of claims 1 to 21, wherein the application of the fluid

Coating material is carried out by a printing process, in particular by means of

Gravure printing, flexographic printing, screen printing, pad printing or inkjet printing.

23. Device for producing a textured coating, in particular for producing a textured coating, in particular for spatially resolved, preferably laterally spatially resolved, producing a textured coating, preferably for spatially resolved generating a location-dependent, preferably a laterally location-dependent, textured coating comprising

a. Preferably, a device for receiving the pad,

b. Means for transporting the support between the individual workstations, c. Preferably, a means for scanning a planar representation, in particular in the form of a color sensor, preferably in the form of a color sensor, which comprises a UV laser diode, wherein the means spatially resolved detects parameters of the areal representation, so that a digitized data set is obtained, and particularly preferably one Means for detecting a height profile of a surface representation,

d. A computer-aided means for storing and / or evaluating a digitized data set of a flat representation, for example in the form of a computer,

e. A device for applying the fluid coating material to the surface of the base, the device being configured in this way that the fluid coating material can be applied over the entire area of the surface of the substrate or only over a partial area thereof,

f. A device for curing the coating, wherein the curing depending on location, preferably laterally depending location, in particular in two steps and preferably by means of the device for curing location dependent, preferably laterally depending on location, introduced into the coating power is preferably adjustable so that in a first Step depending on location, preferably laterally depending on location, only the

Surface layer of the coating depending on location, preferably laterally depending on location, treated, wherein the surface layer preferably has a thickness between 10 nm and 1 μιη, and in a second step, the coating is location-dependent, preferably laterally depending on location, curable over the entire thickness,

G. Preferably, a device for removing the pad, as well

H. Preferably a plant control, for example in the form of a

computer-aided means for controlling the operation of the device, which controls the parameters over all process steps and ensures their interaction.

24. An apparatus according to claim 23, comprising means for setting parameters in one

Informal format, which is commonly used in the printing industry, such as the JDF (Job Definition Format) read and implement in procedural steps.

25. Device according to one of claims 23 or 24, comprising at least in each case a sensor and an encoder and actuators to detect the respective process steps sensorially and controlled by the computer by means of respective actuators respectively implement.

26. Device according to one of claims 23 to 25, which as a compact device

is designed.

27. Device according to one of claims 23 to 26, comprising a device digital finishing with stamping foils.